We keep coming back to this. Not keeping your word is not fraud, deceit, or a crime of any kind despite what the police suggest.
Let me explain "theft by deception":
That's where you provide proof that the person you contracted already knew in advance:
1. he is going to steal your parts
2. he knew what he told you to be false, intended to overcome any hesitation on your part, and without which you would not have given him the work
3. and keep the money
4. and reject any communication

Do you have this proof?